Andy Kozak was one of the most prolific early Athletic Model Guild models, appearing in two solo album/catalogues of his own and supporting another half-dozen models in their solo or in group efforts.
On his own
With Larry Farrell
With Ben Sorensen
With Forrester Millard and Russ Budlong
With his brother Steve
With Vern Charles
This one is a puzzler, and his partner is identified variously as his brother or (often) as Howard (or Alan) Thomas. I would suggest another candidate: Bill Holland, who makes a solo appearance in a later catalogue, but appears in the first dual variety album/catalogue AMG produced.
Bill Holland and (I’m reasonably certain) Dan Hardy
Andy Kozak and (let’s say) Bill Holland
